[Mp4-tech] small corrupted block showing from ISO/IEC 14496-2 Simple Profile bitstream

[Parag Chaurasia]

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  Hi John,
    I have experienced problems with QuickTime Player 6.3 while playing MPEG-4 Simple Profile bitstreams "when Data Partitioning, RVLC and/or Resync Marker" are switched ON. Just check if these were ON in the bitstream that you had inserted into .mp4 file, although by looking at the nature of corruption I don't feel this may be the problem.
  Secondly, first try to decode the MPEG-4 compressed bitstream with a Simple Profile Decoder and view the decoded output to ensure that the Encoder has generated the correct bitstream.
  Best Regards,
  Parag.
On Sat, 27 Mar 2024 John Lam wrote :
>Dear all,
>
>I'm now using a hardware MPEG-4 video codec conformed to ISO/IEC 14496-2 Simple Profile, I put the encoded bitstream into a MP4 file format. When I play it with QuickTime player 6.3, some small corrupted blocks can be seen, the corrupted patterns (in a block) are similar and the location of the blocks seems random for each frame. I want to know is there something wrong of the generated bitstream. Here attach a zipped file containing two snapshots from QuickTimer Player 6.3. I don't know whether I send the attachment to the mail group. If anyone may have idea on it, I can send you the attachment and the whole MP4 file to you directly. Thank you!
>
>-- Best Regards,
>
>___________________________________________________________________
>John Lam <johnlam fujitsu-hkdc.com>
>Phone : (852)2736-3232 Direct : (852)2737-9655 Fax : (852)2314-4207
>
>Fujitsu Microelectronics Pacific Asia Ltd., Design Centre
>
>
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